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<a name="1" href="#1">1</a>   <strong class="jxr_keyword">package</strong> com.totsp.gwittir.client.stream.impl;
<a name="2" href="#2">2</a>   
<a name="3" href="#3">3</a>   <strong class="jxr_keyword">import</strong> com.google.gwt.user.client.DOM;
<a name="4" href="#4">4</a>   <strong class="jxr_keyword">import</strong> com.google.gwt.user.client.Element;
<a name="5" href="#5">5</a>   <strong class="jxr_keyword">import</strong> com.google.gwt.user.client.rpc.SerializationException;
<a name="6" href="#6">6</a>   <strong class="jxr_keyword">import</strong> com.google.gwt.user.client.rpc.SerializationStreamFactory;
<a name="7" href="#7">7</a>   <strong class="jxr_keyword">import</strong> com.google.gwt.user.client.ui.RootPanel;
<a name="8" href="#8">8</a>   
<a name="9" href="#9">9</a>   <strong class="jxr_keyword">import</strong> com.totsp.gwittir.client.stream.StreamControl;
<a name="10" href="#10">10</a>  <strong class="jxr_keyword">import</strong> com.totsp.gwittir.client.stream.StreamServiceCallback;
<a name="11" href="#11">11</a>  
<a name="12" href="#12">12</a>  
<a name="13" href="#13">13</a>  <em class="jxr_javadoccomment">/**</em>
<a name="14" href="#14">14</a>  <em class="jxr_javadoccomment"> *</em>
<a name="15" href="#15">15</a>  <em class="jxr_javadoccomment"> * @author kebernet</em>
<a name="16" href="#16">16</a>  <em class="jxr_javadoccomment"> */</em>
<a name="17" href="#17">17</a>  <strong class="jxr_keyword">public</strong> <strong class="jxr_keyword">abstract</strong> <strong class="jxr_keyword">class</strong> <a href="../../../../../../com/totsp/gwittir/client/stream/impl/StreamingServiceStub.html">StreamingServiceStub</a> {
<a name="18" href="#18">18</a>      <strong class="jxr_keyword">private</strong> SerializationStreamFactory factory = getStreamFactory();
<a name="19" href="#19">19</a>      <strong class="jxr_keyword">private</strong> String servicePath;
<a name="20" href="#20">20</a>  
<a name="21" href="#21">21</a>      <strong class="jxr_keyword">protected</strong> <strong class="jxr_keyword">abstract</strong> SerializationStreamFactory getStreamFactory();
<a name="22" href="#22">22</a>  
<a name="23" href="#23">23</a>      <strong class="jxr_keyword">protected</strong> <a href="../../../../../../com/totsp/gwittir/client/stream/StreamControl.html">StreamControl</a> invoke(String payload,
<a name="24" href="#24">24</a>          <a href="../../../../../../com/totsp/gwittir/client/stream/StreamServiceCallback.html">StreamServiceCallback</a> callback) {
<a name="25" href="#25">25</a>          String id = <span class="jxr_string">"_cb__"</span> + System.currentTimeMillis();
<a name="26" href="#26">26</a>          <a href="../../../../../../com/totsp/gwittir/client/stream/impl/StreamingServiceStub.html">StreamControlImpl</a> control = <strong class="jxr_keyword">new</strong> <a href="../../../../../../com/totsp/gwittir/client/stream/impl/StreamingServiceStub.html">StreamControlImpl</a>(id, callback);
<a name="27" href="#27">27</a>          <strong class="jxr_keyword">this</strong>.setUp(id, callback);
<a name="28" href="#28">28</a>          
<a name="29" href="#29">29</a>          Element iframe = <strong class="jxr_keyword">this</strong>.createIframe(id);
<a name="30" href="#30">30</a>          
<a name="31" href="#31">31</a>  
<a name="32" href="#32">32</a>          Element form = <strong class="jxr_keyword">this</strong>.createForm(id, payload);
<a name="33" href="#33">33</a>          DOM.appendChild(RootPanel.getBodyElement(), form);
<a name="34" href="#34">34</a>          <strong class="jxr_keyword">this</strong>.submit(form);
<a name="35" href="#35">35</a>  
<a name="36" href="#36">36</a>          <strong class="jxr_keyword">return</strong> control;
<a name="37" href="#37">37</a>      }
<a name="38" href="#38">38</a>  
<a name="39" href="#39">39</a>      <strong class="jxr_keyword">public</strong> <strong class="jxr_keyword">void</strong> onReceive(<a href="../../../../../../com/totsp/gwittir/client/stream/StreamServiceCallback.html">StreamServiceCallback</a> callback, String payload) {
<a name="40" href="#40">40</a>          <strong class="jxr_keyword">try</strong> {
<a name="41" href="#41">41</a>              callback.onReceive(factory.createStreamReader(payload).readObject());
<a name="42" href="#42">42</a>          } <strong class="jxr_keyword">catch</strong> (SerializationException se) {
<a name="43" href="#43">43</a>              callback.onError(se);
<a name="44" href="#44">44</a>          }
<a name="45" href="#45">45</a>      }
<a name="46" href="#46">46</a>  
<a name="47" href="#47">47</a>      <strong class="jxr_keyword">public</strong> <strong class="jxr_keyword">void</strong> onError(<a href="../../../../../../com/totsp/gwittir/client/stream/StreamServiceCallback.html">StreamServiceCallback</a> callback, String message) {
<a name="48" href="#48">48</a>          callback.onReceive(<strong class="jxr_keyword">new</strong> RuntimeException(message));
<a name="49" href="#49">49</a>      }
<a name="50" href="#50">50</a>  
<a name="51" href="#51">51</a>      <strong class="jxr_keyword">public</strong> <strong class="jxr_keyword">void</strong> onComplete(String name, <a href="../../../../../../com/totsp/gwittir/client/stream/StreamServiceCallback.html">StreamServiceCallback</a> callback) {
<a name="52" href="#52">52</a>          callback.onComplete();
<a name="53" href="#53">53</a>          cleanUp(name);
<a name="54" href="#54">54</a>      }
<a name="55" href="#55">55</a>  
<a name="56" href="#56">56</a>      <strong class="jxr_keyword">private</strong> <strong class="jxr_keyword">void</strong> cleanUp(String name) {
<a name="57" href="#57">57</a>          Element frame = DOM.getElementById(name + <span class="jxr_string">"frame"</span>);
<a name="58" href="#58">58</a>          DOM.removeChild(DOM.getParent(frame), frame);
<a name="59" href="#59">59</a>  
<a name="60" href="#60">60</a>          Element div = DOM.getElementById(name + <span class="jxr_string">"div"</span>);
<a name="61" href="#61">61</a>          DOM.removeChild(DOM.getParent(div), div);
<a name="62" href="#62">62</a>  
<a name="63" href="#63">63</a>          Element form = DOM.getElementById(name + <span class="jxr_string">"form"</span>);
<a name="64" href="#64">64</a>          DOM.removeChild(DOM.getParent(form), form);
<a name="65" href="#65">65</a>      }
<a name="66" href="#66">66</a>  
<a name="67" href="#67">67</a>      <strong class="jxr_keyword">private</strong> <strong class="jxr_keyword">native</strong> <strong class="jxr_keyword">void</strong> submit(Element form) <em class="jxr_comment">/*<em class="jxr_comment">-{</em></em>
<a name="68" href="#68">68</a>  <em class="jxr_comment">    form.submit();</em>
<a name="69" href="#69">69</a>  <em class="jxr_comment">    }-*/</em>;
<a name="70" href="#70">70</a>  
<a name="71" href="#71">71</a>      <strong class="jxr_keyword">private</strong> <strong class="jxr_keyword">native</strong> <strong class="jxr_keyword">void</strong> setUp(String name, StreamServiceCallback callback) <em class="jxr_comment">/*<em class="jxr_comment">-{</em></em>
<a name="72" href="#72">72</a>  <em class="jxr_comment">    instance = this;</em>
<a name="73" href="#73">73</a>  <em class="jxr_comment">    $wnd[name] = function(input){</em>
<a name="74" href="#74">74</a>  <em class="jxr_comment">    	instance.@com.totsp.gwittir.client.stream.impl.StreamingServiceStub::onReceive(Lcom/totsp/gwittir/client/stream/StreamServiceCallback;Ljava/lang/String;)(callback,unescape(input));</em>
<a name="75" href="#75">75</a>  <em class="jxr_comment">    };</em>
<a name="76" href="#76">76</a>  <em class="jxr_comment">    $wnd[name+"E"] = function(input){</em>
<a name="77" href="#77">77</a>  <em class="jxr_comment">        instance.@com.totsp.gwittir.client.stream.impl.StreamingServiceStub::onError(Lcom/totsp/gwittir/client/stream/StreamServiceCallback;Ljava/lang/String;)(callback,unescape(input));</em>
<a name="78" href="#78">78</a>  <em class="jxr_comment">    };</em>
<a name="79" href="#79">79</a>  <em class="jxr_comment">    $wnd[name+"C"] = function(){</em>
<a name="80" href="#80">80</a>  <em class="jxr_comment">        instance.@com.totsp.gwittir.client.stream.impl.StreamingServiceStub::onComplete(Ljava/lang/String;Lcom/totsp/gwittir/client/stream/StreamServiceCallback;)(name,callback);</em>
<a name="81" href="#81">81</a>  <em class="jxr_comment">        $wnd[name] = null;</em>
<a name="82" href="#82">82</a>  <em class="jxr_comment">        $wnd[name+"E"] = null;</em>
<a name="83" href="#83">83</a>  <em class="jxr_comment">        $wnd[name+"C"] = null;</em>
<a name="84" href="#84">84</a>  <em class="jxr_comment">    };</em>
<a name="85" href="#85">85</a>  <em class="jxr_comment">    }-*/</em>;
<a name="86" href="#86">86</a>  
<a name="87" href="#87">87</a>      <em class="jxr_javadoccomment">/**</em>
<a name="88" href="#88">88</a>  <em class="jxr_javadoccomment">     * @param servicePath the servicePath to set</em>
<a name="89" href="#89">89</a>  <em class="jxr_javadoccomment">     */</em>
<a name="90" href="#90">90</a>      <strong class="jxr_keyword">public</strong> <strong class="jxr_keyword">void</strong> setServicePath(String servicePath) {
<a name="91" href="#91">91</a>          <strong class="jxr_keyword">this</strong>.servicePath = servicePath;
<a name="92" href="#92">92</a>      }
<a name="93" href="#93">93</a>  
<a name="94" href="#94">94</a>      <strong class="jxr_keyword">private</strong> Element createForm(String id, String payload) {
<a name="95" href="#95">95</a>          Element form = DOM.createForm();
<a name="96" href="#96">96</a>          DOM.setStyleAttribute(form, <span class="jxr_string">"position"</span>, <span class="jxr_string">"absolute"</span>);
<a name="97" href="#97">97</a>          DOM.setStyleAttribute(form, <span class="jxr_string">"top"</span>, <span class="jxr_string">"0px"</span>);
<a name="98" href="#98">98</a>          DOM.setStyleAttribute(form, <span class="jxr_string">"right"</span>, <span class="jxr_string">"0px"</span>);
<a name="99" href="#99">99</a>          DOM.setElementProperty(form, <span class="jxr_string">"action"</span>, <strong class="jxr_keyword">this</strong>.servicePath);
<a name="100" href="#100">100</a>         DOM.setElementProperty(form, <span class="jxr_string">"id"</span>, id + <span class="jxr_string">"form"</span>);
<a name="101" href="#101">101</a>         DOM.setElementProperty(form, <span class="jxr_string">"method"</span>, <span class="jxr_string">"POST"</span>);
<a name="102" href="#102">102</a>         DOM.setElementProperty(form, <span class="jxr_string">"target"</span>, id + <span class="jxr_string">"frame"</span>);
<a name="103" href="#103">103</a> 
<a name="104" href="#104">104</a>         Element r = DOM.createElement(<span class="jxr_string">"input"</span>);
<a name="105" href="#105">105</a>         DOM.setElementProperty(r, <span class="jxr_string">"type"</span>, <span class="jxr_string">"hidden"</span>);
<a name="106" href="#106">106</a>         DOM.setElementProperty(r, <span class="jxr_string">"name"</span>, <span class="jxr_string">"r"</span>);
<a name="107" href="#107">107</a>         DOM.setElementProperty(r, <span class="jxr_string">"value"</span>, payload);
<a name="108" href="#108">108</a> 
<a name="109" href="#109">109</a>         Element c = DOM.createElement(<span class="jxr_string">"input"</span>);
<a name="110" href="#110">110</a>         DOM.setElementProperty(c, <span class="jxr_string">"type"</span>, <span class="jxr_string">"hidden"</span>);
<a name="111" href="#111">111</a>         DOM.setElementProperty(c, <span class="jxr_string">"name"</span>, <span class="jxr_string">"c"</span>);
<a name="112" href="#112">112</a>         DOM.setElementProperty(c, <span class="jxr_string">"value"</span>, id);
<a name="113" href="#113">113</a>         DOM.appendChild(form, c);
<a name="114" href="#114">114</a>         DOM.appendChild(form, r);
<a name="115" href="#115">115</a> 
<a name="116" href="#116">116</a>         <strong class="jxr_keyword">return</strong> form;
<a name="117" href="#117">117</a>     }
<a name="118" href="#118">118</a> 
<a name="119" href="#119">119</a>     <strong class="jxr_keyword">private</strong> <strong class="jxr_keyword">native</strong> Element createIframe(String id)<em class="jxr_comment">/*<em class="jxr_comment">-{</em></em>
<a name="120" href="#120">120</a> <em class="jxr_comment">        var style = " style='position:absolute; top:0px; right:0px; border:0px solid white; width:0px; height:0px' ";</em>
<a name="121" href="#121">121</a> <em class="jxr_comment">    	var div = $doc.createElement("div");</em>
<a name="122" href="#122">122</a> <em class="jxr_comment">    	div.id = id+"div";</em>
<a name="123" href="#123">123</a> <em class="jxr_comment">    	$doc.body.appendChild(div);</em>
<a name="124" href="#124">124</a> <em class="jxr_comment">    	div.innerHTML = "&lt;iframe id='"+id+"frame' name='"+id+</em>
<a name="125" href="#125">125</a> <em class="jxr_comment">    		"frame' "+style+"&gt;&lt;/iframe&gt;";</em>
<a name="126" href="#126">126</a> <em class="jxr_comment">    }-*/</em>;
<a name="127" href="#127">127</a>     
<a name="128" href="#128">128</a>     <strong class="jxr_keyword">protected</strong> <strong class="jxr_keyword">class</strong> <a href="../../../../../../com/totsp/gwittir/client/stream/impl/StreamingServiceStub.html">StreamControlImpl</a> <strong class="jxr_keyword">extends</strong> <a href="../../../../../../com/totsp/gwittir/client/stream/StreamControl.html">StreamControl</a> {
<a name="129" href="#129">129</a>         String name;
<a name="130" href="#130">130</a>         <a href="../../../../../../com/totsp/gwittir/client/stream/StreamServiceCallback.html">StreamServiceCallback</a> callback;
<a name="131" href="#131">131</a> 
<a name="132" href="#132">132</a>         <a href="../../../../../../com/totsp/gwittir/client/stream/impl/StreamingServiceStub.html">StreamControlImpl</a>(String name, <a href="../../../../../../com/totsp/gwittir/client/stream/StreamServiceCallback.html">StreamServiceCallback</a> callback) {
<a name="133" href="#133">133</a>             <strong class="jxr_keyword">super</strong>();
<a name="134" href="#134">134</a>             <strong class="jxr_keyword">this</strong>.name = name;
<a name="135" href="#135">135</a>             <strong class="jxr_keyword">this</strong>.callback = callback;
<a name="136" href="#136">136</a>         }
<a name="137" href="#137">137</a> 
<a name="138" href="#138">138</a>         @Override
<a name="139" href="#139">139</a>         <strong class="jxr_keyword">public</strong> <strong class="jxr_keyword">boolean</strong> terminate() {
<a name="140" href="#140">140</a>             Element iframe = DOM.getElementById(<strong class="jxr_keyword">this</strong>.name + <span class="jxr_string">"frame"</span>);
<a name="141" href="#141">141</a> 
<a name="142" href="#142">142</a>             <strong class="jxr_keyword">if</strong> (iframe == <strong class="jxr_keyword">null</strong>) {
<a name="143" href="#143">143</a>                 <strong class="jxr_keyword">return</strong> false;
<a name="144" href="#144">144</a>             }
<a name="145" href="#145">145</a> 
<a name="146" href="#146">146</a>             onComplete(name, callback);
<a name="147" href="#147">147</a> 
<a name="148" href="#148">148</a>             <strong class="jxr_keyword">return</strong> <strong class="jxr_keyword">true</strong>;
<a name="149" href="#149">149</a>         }
<a name="150" href="#150">150</a>     }
<a name="151" href="#151">151</a> }
</pre>
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